| Symbol | Name | Country | Exchange |
|---|---|---|---|
| NO8 | NOV Inc | DE | F |
| OCT | Innospec Inc | DE | F |
| PE1 | Patterson-UTI Energy Inc | DE | F |
| RLD | RPC Inc | DE | F |
| TWZ | Trican Well Service Ltd | DE | F |
| X9P | ChampionX Corporation | DE | F |
| YIZH | Sinopec Oilfield Service Corporation | DE | F |
| CFW | Calfrac Well Services Ltd. | CA | TO |
| STEP | STEP Energy Services Ltd | CA | TO |
| TCW | Trican Well Service Ltd. | CA | TO |
| ASHAPURMIN | Ashapura Minechem Limited | IN | NSE |